main {
  width: 1000px;
  height: 100vh;
  margin: 0 auto;
  box-sizing: content-box;
  margin-top: 30px;
}
main article {
  width: 730px;
  background: #fff;
  float: left;
  border: solid 1px #ebe8e8;
  padding: 30px;
  box-sizing: border-box;
  border-radius: 3px;
}
main article h1 {
  font-size: 25px;
  margin-bottom: 30px;
}
main article ul li {
  padding: 15px 0;
}
main aside {
  width: 250px;
  background: #fff;
  float: right;
  border: solid 1px #eee;
  border-radius: 6px;
}
main aside .card-header {
  padding: 15px 20px;
  font-size: 16px;
  border-bottom: solid 1px #ddd;
}
main aside .card-body {
  padding: 20px;
  border-bottom: solid 1px #ddd;
}
main aside .card-footer {
  padding: 15px 10px;
}
